<template>
  <div class="song-list">
    <ul class="song-list-header">
      <li v-for="(item,index) in songStyle" :key="index" @click="handleChangeView(item.name)"
      :class="{active:item.name == activeName}">
        {{item.name}}
      </li>
    </ul>
    <div >
      <content-list :content-list="data"></content-list>
    </div>
    <div class="pagination">
     <el-pagination
       layout="total, prev, pager, next"
       @current-change="handleCurrentChange"
       :current-page ="currentPage"
       :page-size="pageSize"
       :total="albumDatas.length"
     ></el-pagination>
    </div>
  </div>
</template>

<script>
  import ContentList from '../components/ContentList';
  import {getAllSongList,getSongListOfLikeStyle} from '../api/index';
  import {mixin} from "../mixins";
  import {songStyle} from '../assets/data/songList';
  export default {
    name: 'SongList',
    mixins:[mixin],
    components:{
      ContentList
    },
    computed:{
      //计算当前表格中的数据
      data(){
        return this.albumDatas.slice((this.currentPage - 1)*this.pageSize,this.currentPage*this.pageSize)
      }
    },
    data(){
      return{
        albumDatas: [],      //歌单数据
        pageSize: 15,        //页面大小，一页有15条数据
        currentPage: 1,      //当前页，默认第一页
        songStyle: [],           //风格
        activeName: '全部歌单'    //当前风格
      }
    },
    mounted(){
      this.getSongList()
      this.songStyle = songStyle
      this.activeName ='全部歌单'
    },
    methods:{
      getSongList(){
        getAllSongList()
          .then(res =>{
            this.currentPage = 1;
            this.albumDatas = res;
          })
      },
      //获取当前页
      handleCurrentChange(val){
        this.currentPage = val;
      },
      //根据style显示对应的歌单
      handleChangeView(name){
        this.albumDatas = [];
        this.activeName = name
        if(name =='全部歌单'){
          this.getSongList()
        }else {
          this.goSongListOfStyle(name)
        }
      },
      //根据style查询对应的歌单
      goSongListOfStyle(style){
        getSongListOfLikeStyle(style)
          .then(res =>{
            this.currentPage = 1;
            this.albumDatas = res;
          })
      },
    }
  }
</script>

<style lang="scss" scoped>
  @import '../assets/css/song-list.scss';
</style>
